MESON Chess Problem Database

Problem Display
PID: 75129 (2K5/1pp4b/3pB3/N2N4/1P1knBn1/P3rP2/2P2R2/6Q1 w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2007

2K5/1pp4b/3pB3/N2N4/1P1knBn1/P3rP2/2P2R2/6Q1

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Rd2#
    • 1...Rxa3
      • 2.Rd2#
    • 1...Rb3
      • 2.Rd2#
    • 1...Rc3
      • 2.Rd2#
    • 1...Rxf3
      • 2.Rd2#
    • 1...Se5
      • 2.Bxe3#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Sb5#
      • 1...Kxc3
        • 2.Qa1#
      • 1...Rxc3
        • 2.Rd2#
      • 1...Sxc3
        • 2.Sb3#
      • 1...b5
        • 2.Sxb5#
      • 1...c6!
    • 1.Qd1+?
      • 1...Rd3
        • 2.Qxd3#
      • 1...Sd2!
    • 1.c3+?
      • 1...Kd3
        • 2.Qb1#
      • 1...Rxc3
        • 2.Rd2#
      • 1...Sxc3!
  • Keys
    • 1.Sxc7!
      • threat
        • 2.Sb5#
      • 1...Kc3
        • 2.Qa1#
      • 1...Rc3
        • 2.Rd2#
      • 1...Sc3
        • 2.Sb3#
      • 1...b5
        • 2.Sxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(a);::QAB(A)+R(C),DCHECK
    • R(a);XP(D)::QAB(A)+R(C),DCHECK
    • R(a);XP(E)::QAB(A)+R(C),DCHECK
    • S(d);N_GUARD,SBLOCK::B(G),XR(a)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(I)::QAB(A)
        • R(a);SBLOCK,XS(I)::QAB(A)+R(C),DCHECK
        • S(c);SBLOCK,XS(I)::S(H)
        • P(f);::S(I),XP(f)
      • Refutation
        • P(g);
    • Try
      • Q(A);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAR1(A),XR(a)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • P(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(A)
        • R(a);XP(B)::QAB(A)+R(C),DCHECK
      • Refutation
        • S(c);XP(B)
  • Actual
    • S(I);XP(g)
    • Threat
      • S(I)
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • R(a);P_PINS(I),SBLOCK::QAB(A)+R(C),DCHECK
      • S(c);SBLOCK,S_CUTR(a)::S(H)
      • P(f);::S(I),XP(f)
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